>> just a warning to let people know that this threat is out there and it's very real and that we've had documented cases of pirating. so it's mainly for situational awareness, and, you know, we don't recommend going into mexico on this side of the lake. >> reporter: tiffany hartley says she had heard about troubles on falcon lake, but she and david had been there once before and things were fine. before and thing was fine. they never felt that somehow anything could happen. >> we hadn't heard of anything for a while and we were just there in august. enjoyed three, four hours that day on falcon lake. >> reporter: after all, it was so sunny. so calm. so perfect for one last ride. >> i told him, please, don't shoot. please, don't. >> reporter: in an instant, tiffany hartley claims she and david were caught in a war zone. >> are you sure that your husband got shot? >> yes.